Brake for automobile-trucks.



E. ROBLIN.

, BRAKE FOR AUTOMOBILE TRUCKS.

APPLICATION IILED NOV.19, 1913.

1,103,540. Patented July 14, 19m

Inventor Attorneys 7 EDWIN ROBLIThL-OF TOLEDO, OHIO.

BRAKE FOR AUTOMOBILE-TRUCKS.

Specification of Letters Patent. Application filed November 19, 1913. Serial No. 801,906.

Patented m 1914.

To all whom it may concern:

Be it known that I, EDWIN ROBLIN, a citizen ofthe United States, residing at Toledo, in the county of Lucas and State of Ohi o,'have invented a new and useful Brake for Automobile-Trucks, of which the following is a specification.

The device forming the subject matter of this application is a vehicle brake, and one object of the present invention is to provide a brake of the sort above mentioned which, through the medium of a simple mechanism, will afford a strong hold upon the drum of a wheel, to resist the rotation of, the wheel.

Another object of the invention is to provide a novel means for supporting the brake and for assembling the same with the vehicle mechanism.

The invention aims further to provide a vehicle brake, the shoes of which, without theus'eof springs, will at all times be main tainedy in operative relation to the eccentric whereby the shoes are actuated.

The inventionaims I to improve generally and to enhance the utility of, devices of that type to which the present inventionappertalns.

With 'the'above and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details-of construction hereinafter described and. claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope ofwhat. is claimed without departing from the spirit of the invention.

:In the accompanying drawing: Figure 1 shows in top plan, a portlon of a vehicle to which the brake constituting the subject matter of the present application has been applied; Fig. 2 is a section on the line 2--2 of Fig.1, parts being removed Fig. 3 is a fragmental perspective showing one end of the shoe support; Fig. 1 is a fragmental perspective showing one end of the connecting bar which extends between the eccentric; Fig. 5 is a perspective illustrating a modified form of =connecting bar. Fig. 6 is a perspective view of the eccentric; Fig. 7 is a fragmental section of the drum and adjacent parts, the view showing a modification.

Referring to the drawings, the numeral 1 indicates a portion of a frame F of a vehicle, the rear axle being indicated at 2.

' The springs .are shown at 3 and'the numera14 indicates the wheels of a vehicle, the same being provided upon their adjacent, inner faces with drums 5.

Located within the drums 5 and ordina ceive knuckles 14 formed upon the lowerends of the curved shoes 15 which are 10.-

cated within the contour of the drums 5, the knuckles 1.4 of the shoes 15 being mounted to swing on the pivot elements 10 and 11, and being provided with flanges 15.

Located within each drum 5 and within the space defined by the overhanging ends of the shoes 15 and the support 6 is an eccentric 17 having a flange 17 adapted to bear upon the innerQfaces of the shoes 15, adjacent the ends of the shoes. Especial attention is directed to the fact that the supports 16 are disposed horizontally or nearly so,

and that the upper, inner ends of the shoes the purpose of holding,- the upper ends of the I shoes down upon the eccentrics 17, thereby avoiding rattling or unnecessary noise.

, The eccentrics 17 upon the opposite sides of the vehicle are united by a connection, which may be of any desired form. In the present instance, the connection is shown in the form ofa bar 19. This bar 19 may be formed integrally with the eccentrics 17 or may be secured thereto in any desired manner. As shown, the bar' 19 is provided at its ends with reduced spindles 20 which extend through the eccentrics 17, cotter pins or the like shown at 21 being inserted through the spindles 20, to hold the ends of tion of the bar 19 is a clevis 22 connected 1 ends to receive a turn buckle 25. The rod 24 is pivotally connected at its forward end in any desired manner as indicated at .26 with the rear end of a forwardly extended actuating member 27 which'may be a rod. It is to be noted at this point, that since the connecting bar 19 is located above the springs 3, the actuating member 27 may be disposed adjacent the longitudinal center of the vehicle, and therefore, the side portions of the vehicle frame are not encumbered by the brake actuating mechanism. In order to prevent the supports 6 from rotating on the axle 2 when the wheels 4 are rotated and when the brake shoes 15 are in engagement with the drums 5, the forward ends of the supports 6 are provided with arms 28. The arms 28 may be connected with the forward ends of the supports 6 in any desired manner. In the present instance, the arms 28 are connected with the supports by means of the pivot elements 11 which serve,

also, to connect one shoe of eachbrak'ing device with the forward end of the corresponding end of the support 6. As shown,

the forward ends of the arms 28 enter the frame 1 and are'secured thereto by means of nuts 29. v

In some vehicles, the axle is not of the straight form indicated by the reference character 2. Under such circumstances, it-

may be desirable .to shape the connecting member, represented by the element19, ac-

cordingly. 'Such a construction is shown in Fig. 5, wherein the connecting member is arched intermediate its ends as shown at 30, any suitable means indicated at 31 being provided at the ends of'the connecting bar for assembling the same with the extensions 17'. In Fig. 5, the turn buckle structure hereinbefore described in detail is referred to generally by the reference character 32.

Although not mandatory, it may be desirable at times to protect the inner, open sides ofthe drums 5 by means of shields 33.

Although these shields 33 may be upheld in any expedient manner, the same, in the.

present instance, as shown in Fig. 4, are upheld by the arms 28.

As shown in Fig. 7, a friction facing 50 may be extended transversely of the shoes15 forcooperation with the drum 5, the edges .of the facing being secured to the under surfaces'of the flanges 15 by means of attaching elements 51. I Having thus described the invention,

what is claimed is v6O wheels journaled for rotation upon the ends 1. Ina device of the class described,

of the axle and provided with, drums; supports located Within the drums and mounted on the axle; a shoe pivoted to each support and adapted to cooperate with the corresponding drum; an eccentric pivoted to each support and cooperating with the corresponding shoe to force the sameoutwardly against the drum; 2. connection uniting-the eccentrics and disposed longitudinally of the axle; means for actuating the connection; and means for securing the supports against rotation with the wheels.

. 2. In-a device of the classdescribed, an-

axle; a wheel journaled on the axle; a drum carried by the wheel; a support carried by the axle and located Within the contour of the drum; shoes cooperating with the drum and pivoted to the ends of the support; an eccentric pivoted to the support and engaging the inner faces of the shoes, the shoes being located above the support whereby the 4 adjacent, inner edges of the shoes will-rest gravitationally in engagement with the cocentric; means for operating the eccentric; and means for anchoring the support;

3. In a device of the class described, a

frame; an axle carried thereby; a wheel journaled' for rotation on the axle; a drum carried by the wheel; a support having an opening receiving the axle, the support including an arm extended beyond the periphery of the drum and connected with the frame; a shoe pivoted to the support and cooperating with the drum; an eccentric pivoted to the support cooperating with the shoe to force the same outwardly against the drum; and means for operating the eccentric.

4'. In a device of the class described, a

frame; an axle carried thereby; a wheel journaled on the axle; a drum carried by the wheel; a support located within the contour of the drum and having an opening receiving the axle; means for securing the support to the frame against rotation on the axle; shoes pivoted to the ends of the support and overhanging the support; springs connected with the shoes and with the sup: port; an eccentric pivoted on the support and coiiperatin with theshoes; and means for operating t e eccentric; the springs con.-

stituting yieldable means for maintaining the ends of the shoes in engagement with the eccentric, thereby to avoid rattling.

In testimony that I claim the foregoing as my own, I have hereto afiixed my signature in the presence of two Witnesses.

' EDWIN ROBLIN.

W itnesses:-

B." G. BOWE, CLAYTON ZELUFF.

Q Copies of this patent may be obtained tor five cents each, by addressing the Gommissioner oi I'atents. Y 1 Washington, 11.0. 

